<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../js/vue.js"></script>
</head>
<body>
  <div id="app">
    <button @click="clickHandler('hello',$event)">按钮</button>
  </div>
  <script>
    new Vue({
      el: '#app',
      data: {

      },
      methods: {
        // 1.按钮点击事件处理函数
        clickHandler(msg,e) {
          console.log(msg,e);
        }
      }
    })
  </script>
</body>
</html>